United States--east coast, Maine--New Hampshire, Portsmouth Harbor, Cape Neddick Harbor to Isles of Shoals [cartographic material] / Coast Survey.
- Depths shown by isolines and soundings. Relief shown by contours and spot heights. "Soundings in feet." Insets: Continuation to Cape Neddick Harbor. Scale 1:20,000. Includes source diagram and tidal information. "C.& G.S. 211." "Catalog Page No. 3."
- The Survey
- Held by
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